Switch 'analyzer' to 'package:test' and test_reflective_loader ^0.1.0.

pkg/analyzer/test/file_system/memory_file_system_test.dart

Index: pkg/analyzer/test/file_system/memory_file_system_test.dart
diff --git a/pkg/analyzer/test/file_system/memory_file_system_test.dart b/pkg/analyzer/test/file_system/memory_file_system_test.dart
index 40c04e21101496a41214640b401b9d47689bcfcb..59f59b6ce9ed32b2a3b5ea11057f396e25b7cdf7 100644
--- a/pkg/analyzer/test/file_system/memory_file_system_test.dart
+++ b/pkg/analyzer/test/file_system/memory_file_system_test.dart
@@ -13,20 +13,19 @@ import 'package:analyzer/src/generated/engine.dart' show TimestampedData;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:path/path.dart';
+import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
-import 'package:unittest/unittest.dart';
 import 'package:watcher/watcher.dart';
 
-import '../utils.dart';
-
 main() {
-  initializeTestEnvironment();
-  defineReflectiveTests(FileSystemExceptionTest);
-  defineReflectiveTests(FileTest);
-  defineReflectiveTests(FolderTest);
-  defineReflectiveTests(MemoryFileSourceExistingTest);
-  defineReflectiveTests(MemoryFileSourceNotExistingTest);
-  defineReflectiveTests(MemoryResourceProviderTest);
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FileSystemExceptionTest);
+    defineReflectiveTests(FileTest);
+    defineReflectiveTests(FolderTest);
+    defineReflectiveTests(MemoryFileSourceExistingTest);
+    defineReflectiveTests(MemoryFileSourceNotExistingTest);
+    defineReflectiveTests(MemoryResourceProviderTest);
+  });
 }
 
 var _isFile = new isInstanceOf<File>();